long list of theme/style fixes

[rabernat]

General

• [design] navbar update #20
• Make the Dashboard navbar link a dropdown menu with feedstocks, bakeries, recipes runs, datasets as the children
• Remove use of Panton Black Caps basically everywhere. Switch to Panton Light Caps or Helvetica Light.
• [design] dashboard menu #21

Feedstock item page

• Say "feedstock" somewhere on the page
• Make Bakery an active link to a bakery (I realize this info may be inconsistent in the staging db)
• [design] Add maintainers and provenance sections to feedstock page #22

Recipe run lists (both under Feedstock and standalone)

• Don't use all caps font for recipe run name
• Remove border around recipe run items list. Switch to a lighter style--perhaps striped rows?
• Add pagination #23

Recipe run item

• Say "Recipe Run" somewhere on the page
• Make status a colored tag
• SHA should link to github SHA
• Add link to parent feedstock
• Add link to bakery
• [design] List datasets on feedstock page. #24

Bakeries

• Add standalone bakery item page (instead of linking to https://github.com/pangeo-forge/pangeo-forge-gcs-bakery)
• Add links to bakery maintainers (github, etc)

[rabernat]

One more item for the list:

• Add information from the provenance section of meta.yaml (providers and license) to the feedstock and dataset pages.

[jhamman]

I believe all the remaining check boxes here have been moved to stand-alone issues.

[cisaacstern]

Looks like the only remaining to-do here is #23, which will not longer be necessary, following #430, so closing this!